oblatum

from The Collaborative International Dictionary of English v.0.48

Oblatum \Ob*la"tum\, n.; pl. {Oblata}. [NL. See {Oblate}.]
   (Geom.)
   An oblate spheroid; a figure described by the revolution of
   an ellipse about its minor axis. Cf. {Oblongum}.
   [1913 Webster]